每个区域都是整个地球的一部分，每个地方都是区域的一部分。

The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.

Science must be a force for good in the world.

Innovation is at the heart of what we do. It's how we meet the world's growing energy needs while reducing our environmental footprint.

电影制作的艺术在于细节；是那些小事情造成了大的不同。